Handytool articles
Practical guides for everyday files.
Clear workflows for PDFs, images, video, audio, documents, and small web utilities. Each guide points to a tool you can use right away.
PDF guide
How to Merge PDF Files Online Without Uploading Them
Combine multiple PDFs into one in the browser, reorder pages, and download a single file without sending any document to a server.
Image guide
How to Convert HEIC to JPG Online Without Uploading
Turn iPhone HEIC photos into widely compatible JPGs in the browser, with quality controls and batch conversion, without sending images to a server.
Video guide
How to Compress a Video Online Without Uploading It
Reduce MP4, MOV, WebM, and MKV file size directly in the browser with quality presets, resolution options, and a privacy-first workflow.
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- 5 min
PDF guide
How to Merge PDF Files Online Without Uploading Them
Combine multiple PDFs into one in the browser, reorder pages, and download a single file without sending any document to a server.
Updated Apr 9, 2026Read - 5 min
Image guide
How to Convert HEIC to JPG Online Without Uploading
Turn iPhone HEIC photos into widely compatible JPGs in the browser, with quality controls and batch conversion, without sending images to a server.
Updated Apr 8, 2026Read - 6 min
Video guide
How to Compress a Video Online Without Uploading It
Reduce MP4, MOV, WebM, and MKV file size directly in the browser with quality presets, resolution options, and a privacy-first workflow.
Updated Apr 7, 2026Read - 5 min
Video guide
How to Convert a Video to a GIF Online
Turn a short MP4, MOV, or WebM clip into a looping GIF in the browser, with frame rate, resolution, and file-size tips.
Updated Apr 6, 2026Read - 4 min
Utility guide
How to Change Text Case Online (UPPER, lower, Title, Sentence)
Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case, and kebab-case in the browser, with common use cases explained.
Updated Apr 5, 2026Read - 5 min
PDF guide
How to Sign a PDF Online Without Uploading It
A practical guide to adding a drawn or typed signature to a PDF in your browser, with no account, upload, or watermark.
Updated Apr 21, 2026Read - 6 min
PDF guide
How to Convert Word to PDF Online Without Uploading Your Document
A practical guide to turning a .docx Word document into a clean PDF in your browser, with page size, margins, and privacy checks covered.
Updated Apr 20, 2026Read - 6 min
PDF guide
How to Compress a PDF Online Without Uploading It
Reduce PDF file size in your browser with practical compression presets, quality checks, and privacy notes before you send the file.
Updated Apr 19, 2026Read - 5 min
Image guide
How to Remove an Image Background Online Without Uploading It
Cut a subject out of a photo in the browser and download a transparent PNG for designs, listings, slides, and profile images.
Updated Apr 18, 2026Read - 5 min
Utility guide
How to Create a QR Code Online for a Link, Email, or Wi-Fi Network
Generate a static QR code in the browser, customize size and color, and export a PNG or SVG for screens, print, packaging, and signs.
Updated Apr 17, 2026Read - 6 min
Utility guide
How to Generate a Strong Password Online Safely
Create random or memorable passwords with browser crypto, understand the strength controls, and keep the result private.
Updated Apr 16, 2026Read - 5 min
Social guide
How to Download a YouTube Thumbnail in HD
Paste a YouTube URL, Shorts link, embed URL, or video ID and save the thumbnail image in the resolution YouTube provides.
Updated Apr 15, 2026Read - 5 min
Image guide
How to Resize an Image Online Without Uploading It
Change image dimensions by pixels or percent in your browser, with aspect-ratio tips, format choices, and batch resizing checks.
Updated Apr 14, 2026Read - 5 min
Image guide
How to Add a Watermark to an Image Online
Add a text or logo watermark to photos in your browser, control position and opacity, and export a clean batch without uploading files.
Updated Apr 13, 2026Read - 6 min
Video guide
How to Trim a Video Online Without Uploading It
Cut the start or end from MP4, MOV, and WebM videos in the browser, with privacy, keyframe, and export tips.
Updated Apr 12, 2026Read - 5 min
Audio guide
How to Extract Audio from a Video Online
Pull audio from MP4, MOV, WebM, or MKV files in your browser and save it as MP3, WAV, OGG, or M4A.
Updated Apr 11, 2026Read - 5 min
Document guide
How to Format and Validate JSON Online
Pretty-print, minify, and validate JSON in your browser while keeping API responses, configs, and data dumps local.
Updated Apr 10, 2026Read